Chamaeacanthidae

Chamaeacanthidae is a family of extinct ray-finned fish that lived during the Triassic period. Fossils attributed to this family have been found in various locations worldwide, indicating a relatively widespread distribution during that time. The exact phylogenetic placement of Chamaeacanthidae within the broader Actinopterygii class is still debated among paleontologists, though they are generally considered primitive ray-finned fishes.

Members of Chamaeacanthidae are characterized by certain skeletal features, including the structure of their fins and scales. Their bodies were typically deep-bodied and laterally compressed, suggesting they were likely reef dwellers or lived in similar nearshore environments. The dentition of some species indicates they may have been omnivores or small predators.

The fossil record for Chamaeacanthidae, while not extensive, provides valuable insights into early ray-finned fish evolution. Studies of their morphology help researchers understand the diversification of fish during the Triassic, a crucial period following the Permian-Triassic extinction event. The extinction of Chamaeacanthidae, like many other Triassic fish families, is part of the larger turnover of marine life that occurred at the end of the period. Further research and new fossil discoveries are expected to refine our understanding of this extinct fish family.